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4 years ago

What does a unit rate comparison tell us????????

1 answer:

4 0

A unit rate is a comparison where the second value is 1. This could be miles driven per hour (one hour), the cost of one apple, the words you can type in a minute. Unit rates are helpful when trying to compare two quantities.

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Pls help. No files pls. Will give brainliest.

nordsb [41]

To find f(-20), first figure out which piece x = -20 fits with.

Since -20 < -12, x = -20 first in the domain used by the third piece.

For f(-20), treat this function as if it was just f(x) = 3x-7.

f(-20) = 3(-20) -7

= -60 - 7

= -67

6 0

3 years ago

The bottom of Ignacio's desktop is 74.5cm from the floor. Ignacios sits in his adjustable chair, and the tops of his legs are 49

Xelga [282]

Answer:

Number of rotations r < 5.25

Step-by-step explanation:

Given: bottom of the desktop is 74.5 cm from the floor.

Top of Ignacio's legs are 49.3 cm from the floor.

Each clockwise rotation on the knob raises Ignacio's legs by 4.8 cm.

To find: Inequality to determine the number of clockwise rotations r, Ignacio could make with the knob without his legs touching the desk.

Solution: Distance between Ignacio's legs and the base of the desktop = 74.5 -49.3 = 25.2

Therefore inequality will be

Height raised in one rotation × r < 25.2

4.8×r < 25.2

r < 25.2÷4.8

r < 5.25

5 0

4 years ago

PLEASE HELP ASAP Factor Completely y^2+10y

Mariulka [41]

Answer:

A y(y+10)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

If 12g of a radioactive substance are present initially and 8yr later only 6g remain, how much if the substance will be present

Brums [2.3K]

The weight of substance remaining after 13 years is 2.25 g.

Given:

Present weight of substance = 12 g

After 8 years weight remains = 6 gm

Now, weight loss in 8 year will be,

12-6=6 gm

So, weight loss in 1 year will be,

$\dfrac{6}{8} =\dfrac{3}{4}$

Total weight loss in 13 year will be,

$\dfrac{3}{4}\times13=9.75$

The weight of substance remaining after 13 years will be,

$12- 9.75 = 2.25 \;\rm g$

Therefore, the weight of substance remaining after 13 years is 2.25 g.

To know more about radioactive decay, refer to the link:

brainly.com/question/12116123

5 0

3 years ago

Solve for r. 1= -10 +r

zvonat [6]

Answer:

Step-by-step explanation:

edge 2020

p.s. pls mark brainliest, and have a good day! :)

4 0

3 years ago